Rapid appearance of negative emotion during oral fentanyl self-administration in male and female rats https://www.biorxiv.org/content/10.1101/2023.04.27.538613v1?med=mas
Rapid appearance of negative emotion during oral fentanyl self-administration in male and female rats https://www.biorxiv.org/content/10.1101/2023.04.27.538613v1?med=mas